Since development and pronunciation of the buttocks begins at menarche and declines with age, full buttocks are also a symbol of youth. New York photographer Irving Klaw also published illustrated adventure/bondage serials by fetish artists Eric Stanton, Gene Bilbrew, Adolfo Ruiz and others. Rainbow parties were covered on The Oprah Winfrey Show in 2003, and became the subject of a juvenile novel called Rainbow Party. Pornography may fall into more than one genre. The term applies to the depiction of the act rather than the act itself, and so does not include live exhibitions like sex shows and striptease. The phrase buttered bun is sometimes used to refer to the owner of the orifice in question. Diaper fetishism is totally independent from pedophilia as the wearer derives pleasure only from the diaper and/or use of it. Oral sex pornography frequently features a person performing fellatio, and less frequently cunnilingus. Interactive pornography, available in CD-ROM and DVD format, allows the viewer to select the particular acts performed at any one time, sometimes with the camera providing a first person view. As of 2013, little analysis of this paraphilia has been reported in medical literature. It is also known colloquially as gushing or squirting, although these are considered to be different gay fuck phenomena in some research publications. Bukkake pornography involves a performer, usually female, onto whom several men or women ejaculate, usually on the face. Transsexual pornography is a genre of pornography. BDSM communities generally welcome anyone with a non-normative streak who identifies with the community; this may include cross-dressers, horny milfs extreme body mod enthusiasts, animal players, latex or rubber aficionados, and others. The term is typically used by the cinematographer within the narrative framework of a pornographic anime hentai film, and since the 1970s has become a leitmotif of the hardcore genre. Although interracial pornography theoretically can apply to depictions of sexual activity between performers of any different racial groups, the term is most commonly used for heterosexual sex acts between black and white performers.